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MERSEN FUSE MV2 400A/185mm 3P3 1.270.094 1.270.094

MERSEN FUSE MV2 400A/185mm 3P3 1.270.094 1.270.094

Reliable 3-pole switching fuse-switch disconnector with 400A rating, designed for 185mm bus bar system integration and enhanced operational safety.

SKU: S1023217Alt SKU: 1.270.094MPN: S1023217
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List Price £722.98 ex VAT
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Why Choose the Mersen S1023217 MULTIVERT® NH Fuse Switch Disconnector?

The Mersen S1023217 is a premium MULTIVERT® NH Size 2 vertical fuse switch disconnector designed for switching, isolation and circuit protection in demanding low-voltage power distribution systems. Engineered for direct installation onto 185 mm busbar systems, it combines compact construction with an integrated current transformer for accurate three-phase current measurement.

Rated at 400 A and 690 V AC, the S1023217 is designed for use with NH Size 2 fuse-links manufactured in accordance with IEC/EN 60269-2 and VDE 0636-2. The integrated 400/5 A, 3.75 VA Class 1 current transformer enables triple-pole current monitoring without requiring external CT mounting, simplifying switchboard design and reducing installation time.

Featuring 1 × 3-pole simultaneous switching with V-terminal cable connections, the S1023217 provides reliable load switching, safe electrical isolation and integrated metering capability, making it ideal for industrial switchboards, transformer substations and power distribution panels.

Key Advantages

  • Integrated 400/5 A Class 1 current transformer for three-phase measurement.
  • 400 A rated current for demanding industrial applications.
  • 690 V AC operating voltage.
  • Designed for direct mounting onto 185 mm busbar systems.
  • 1 × 3-pole simultaneous switching for safe operation.
  • V-terminal cable connections for compatible clamp systems.
  • Compact MULTIVERT® modular construction for simplified installation.

Key Features

  • Mersen MULTIVERT® 400 A Series.
  • Model: S1023217.
  • Catalogue number: 1.270.094.
  • NH Size 2 fuse switch disconnector.
  • 400 A rated current.
  • 690 V AC rated voltage.
  • Integrated CT: 400/5 A, 3.75 VA, Class 1.
  • Triple-pole current measurement.
  • 185 mm busbar mounting.
  • V-terminal cable connections.
  • Suitable for 50 / 60 Hz operation.
  • 120 kA SCCR.

Integrated Switching, Protection and Measurement

The Mersen S1023217 combines load switching, circuit isolation, fuse protection and accurate three-phase current measurement in a single compact assembly. Its integrated 400/5 A Class 1 current transformer removes the need for separately mounted CTs, reducing wiring complexity while improving switchboard layout efficiency.

The MULTIVERT® modular platform enables rapid installation and easy maintenance while maintaining compatibility with genuine Mersen accessories and NH Size 2 fuse-links. Its compact installation depth makes it particularly suitable where panel space is limited.

Typical Applications

  • Industrial low-voltage switchboards.
  • Transformer substations.
  • Power distribution systems.
  • Energy monitoring installations.
  • Motor control centres.
  • OEM electrical equipment.

Technical Specifications

Current 400 A
Phase Three Phase
Item number S1023217
Catalogue No 1.270.094
Description NH fuse-switch disconnector MULTIVERT® Size 2 400A 1x3-Pole switching Bus bar system 185mm V-terminal ct3P
EAN/UPC Code 9008567001561
Frequency (Hz) 50 ... 60 Hz
Rated voltage AC IEC 690 V
Ampere Rating 400 A
Utilization Category AC 23 B @ Ue = AC 400 V; Ie = 400 A AC 22 B @ Ue = AC 500 V; Ie = 400 A AC 21 B @ Ue = AC 690 V; Ie = 400 A
Switchability 1x3-pole switching
RoHS Compliant Yes
AC or DC AC
Short Circuit Current Rating (SCCR) 120kA@Ue = AC 400 V; Ie = 400 A / 120kA@Ue = AC 500 V; Ie = 400 A / 120kA@Ue = AC 690 V; Ie = 315 A / 100kA@Ue = AC 690 V; Ie = 400 A
Fuse Size 2
Design Details MULTIVERT® 1.270.000 with integrated C.T. 400/5A, 3,75 VA, class 1 for triple pole measurement
Number of Poles 3-Pole
Degree of Pollution 3
Rated Impulse Withstand Voltage 12 kV
Rated Insulation Voltage 1000 V
Rated SC Withstand 8 kA / 1 s
Max Power dissipation of Fuse Links Pn 34 W
Max Power dissipation of Solid Links Pn 9 W
Power Dissipation by Ith without Fuse-Links 61 W
Power Dissipation by Ith without Solid Links 151 W
Rated short circuit making capacity with solid links Icm 16 kA
Installation Mounting Bus bar system 185 mm
Product Width 98 mm
Product Length 190 mm
Product Height 685 mm
Sell Pack Quantity 1 EA
Sell Pack Weight 5.41 kg
Sell Pack Width 100 mm
Sell Pack Length 688 mm
Sell Pack Height 195 mm
Product group IEC Fuse Switch Disconnectors
Conventional Free Air thermal Current With Fuse-Links Ith 400 A
Product Weight 5.41 kg
Conventional Free Air thermal Current - Solid Links 630 A
HS Code 85365080
Country of Manufacture Hungary
Poles 3-pole
Device Type Fuse switch disconnector
Voltage 690 V

Frequently Asked Questions

What is the Mersen S1023217 used for?

It is an NH Size 2 fuse switch disconnector providing load switching, isolation, circuit protection and integrated three-phase current measurement.

What is the rated current?

The Mersen S1023217 has a rated operating current of 400 A.

Does the S1023217 include a current transformer?

Yes. It incorporates a 400/5 A, 3.75 VA, Class 1 current transformer for triple-pole measurement.

Which busbar system is compatible?

The switch disconnector is designed for installation onto a 185 mm busbar system.

Which fuse-links are compatible?

The unit is designed for NH Size 2 fuse-links manufactured to IEC/EN 60269-2 and VDE 0636-2.

Trusted for Industrial Power Distribution

Mersen MULTIVERT® fuse switch disconnectors are trusted by panel builders, OEM manufacturers and industrial electrical engineers for dependable switching, integrated current measurement and reliable protection within modern low-voltage distribution systems.

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